Improvement in earth-augers



L. DALLAIRE.

. EARTH AUGE'R. No.182,107. fatent ed. Sept. 12, 1878.'

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wLbwsses. [HUGH/[071' N PETERS, PHOTO-LITHOGRAPHER, WASHINGTON. D, O.

UNITED STATES.

PATENT OFFICE.

. LOUIS DALLATRE, OF AUSTIN, MINNESOTA.

IMPROVEMENT m EARTH-AUGERS.

Specification forming part of Letters Patent No. 182,107, datedSeptember 12, 1876; application filed August 18, 1876.

To all whom it may concern:

Be it known that I,LoUIs DALLAIItE, a resident of Austin, in the countyof Mower and State of Minnesota, have invented certain new and usefulImprovements in Earth or. Well Angers and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to which it pertains to make and usethe same, reference being had to the accompanying drawing, and to theletters of reference marked thereon, which form a part of thisspecification. 7

My invention relates to improvements in earth or well angers. Itconsists in an adjustable reaming-knife or series of reaming-knivesview. Fig. 2 is a vertical section,and Fig. 3

a part of a well-auger constructed according to my invention.

A is the auger, which is attached to the lower end of an ordinarydriving-shaft. The

lower end of shaft is secured, by preference,

in a socket, a, which is attached to the main body of the auger bythearms a, and has on its sides a loop or series of loops, to, for holdingthe upper or free ends of the reamingknives, hereinafter described.

The main body of the auger is composed of thetwo parts B and O, whichare riveted or otherwise properly secured together, and provide theupper and lower chambers B O, which are separated by the partition-shelfD, which may be removed at pleasure for the purpose of discharging theearth from upper chamber B. The upper chamber 13, inclosed by thesection B, is a straight cylinder of uniform diameter throughout itsentire length,

so that when the partition-shelf D is withdrawn the earth will readilydrop therefrom.

The lower section 0 is the'bit or perforating portion of the auger. Itis made slightly tapering, and has its point closed and so formed thatit will readily penetrate the earth, and it is made in two parts, I; andd. The part b, which is half of the section G, is rigidly secured to thesection B, and is provided with the cutting-blade '1), extending fromthe point to section B. The part 01 is ,composed of the two portions dd, which are hinged together, and to the part b, so that they may bethrown back and'open the chamher 0 for the discharge of the earththerefrom. The portion d laps up on the lower end of. the cylinder B, towhich it is secured by any suitable means. The portion d is shortened atits upper end, so that it will turn inward below the partition shelf D,and its free edge extends slightly within the chamber 0 and ,nnder thecutting-edge 12, so that when the chamber is crowded full of earth bythe action of the auger it will be forced outward against and stop thecutting of the earth by i the blade I), and thus indicate when the augershould be raised to the surface to be emptied. 0 care a series ofreaming-knives, made of spring-steel, or other elastic metal. They arehinged to the upper edge of the section B. Their upper ends are madenarrow, and are bent over and thrust through loops a which are set at anincline so as to hold the ends, and, at the same time, permit of. theready adjustment of the knives to any desired ,di-' ameter. Their lowerends are widened, as shown, to facilitate the deposit of the earth intothe chamber B. Y

I do not confine myself to the use of any particular number ofreaming-knives. One will perform the desired work, but, by preference, 1use four, distributed, at equal distances around the anger.

.It will be readily seen that by drawing the ends out of the loops thereamers bend outward,so that thebore or well may be enlarged to anydesired size beyond the diameter of the bore made by the auger.

The partition-shelf D maybe employed as a separate piece, sliding intothe auger through a suitable opening, and on suitable guides orbearings. I prefer to attach it to the portion (1 of the section G insuch position-- that, when the said portion d is closed, it will passimmediately below and close the lower end of the cylinder B." By thisarrangement with the opening of the side d d to discharge the earth fromchamber 0, the chamber B is also thrown open, so that the earth fromboth chambers is discharged simultaneously. The chamber B receives andholds the earth cut by the reamers e 6', so that the action of theauger-blade b is never interfered with by the earth which falls in atthe top.

It will be seen that with an anger constructed as hereinbefore describeddouble the quantity of earth can be cut at a single descent ofthe augerthat can be cut by angers of ordinary construction in wells which areenlarged beyond the diameter of the main body.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. The combination, with a well-auger, of the reaming-knife e, hinged tothe upper edge of the main body of the auger,-.and having its oppositeend secured adjustably to the shaft, substantially as set forth.

2. A well-auger composed of the upper and I cylinder or section B, andconnected adjustably to the operating shaft or socket a, and the part 01hinged to the part 61 substantially as set forth.- I

In testimony that I claim the foregoing as my own I aflix my signaturein presence of two witnesses.

LOUIS DALLAIRE.

Witnesses:

RUsH B. WHEELER, I WM. M. Home.

